Nokia 4A0-105 Exam Practice Test Instant Access

Question 1

In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs) to support CFM messages? (Choose 2)

AMEP

BMAP

CMIP

DMUP

Answer : A, C

Question 2

Click on the exhibit below.

Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?

AThe port that the SAP belongs to must have the correct ether type configured.

BThe SAP must be configured with the right VLAN tag.

CThe SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.

DAll of the above.

Answer : C

Question 3

What action will be taken when an Ethernet switch receives a frame with a known DA and an outer Ethertype value of 0x0800 on a dot1q encapsulated port?

AThe frame will be forwarded out the port associated with the DA.

BThe frame will be discarded.

CThe frame will be flooded to all ports.

DThe frame will be fragmented and forwarded out the port associated with the DA.

Answer : B

Question 4

Which failure scenario is NOT supported by IEEE 802.lag?

ALoss of connectivity.

BUnidirectional Loss.

CLoop detection.

DMerged Services.

EEnd-to-end bit error rates.

Answer : E

Question 5

In IEEE 802.1ag, how are loops detected?

ASpanning-tree BPDUs are returned to the sender.

BThe MEP sees its own CFM frames returned to itself.

CThis is not a function of IEEE 802.lag but of 802.1D

DThe record field of the CFM frame keeps track of chassis-mac addresses.

Answer : B

Question 6

What needs to be configured in a VPLS in order to forward customer STP BPDUs transparently?

ASpanning tree must be enabled within the VPLS.

BSpanning tree BPDUs must be untagged.

CSpanning tree BPDUs must be tagged.

DSpanning tree must be disabled within the VPLS.

Answer : D

Question 7

Click on the exhibit below.

Which of the following features can be enabled to eliminate MAC instability when using policy-based forwarding to redirect traffic to a Layer 2 DPI device?

Adiscard-unknown

Bmac-move

Cdisable-learning

Denable-mac-stability

Answer : C

Nokia 4A0-105 Nokia Virtual Private LAN Services Exam Practice Test